Last-sawing machine.



No. 698,006. Patented Apr. 22, I902.

E w. GERRISH. LAST .S AWING MAEHINE.

(Application filed May 14, 1901.)

(No Model.) 3 Sheets-Sheet l.

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Patentgd Apr. 22, I902.

E. W. GERBISH. LAST SAWINQ MACHINE.

(Application filed May 14, 1901.)

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(No Model.)

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No. 698,006. PatentedApr. 22, I902.

E. W. GERRISH.

LAST sAwma MACHINE.

(Application fi1ed May 14, .1901.)

(No Model.) a Sheers-Sheet 3.

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EDWARD WV. GERRISH, OF LYNN, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TOTHOMAS W. GARDINER, OF LYNN, MASSACHUSETTS.

LAST-SAWING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 698,006, dated April 22,1902. Application filed May 14, 1901, Serial No- 60,l59. (No model.)

To all whom it may concern:

Be it known that I, EDWARD W. GERRISH, a citizen of the United States,residing at Lynn, in the county of Essex and State of Massachusetts,have invented certain new and useful Improvements in Last-SawingMachines; and

I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to to which it appertains to make and use the same.

The present invention relates to a last-sawing machine for use in themanufacture of hinged lasts, a type of which is disclosed in Patent No.646,1i1, granted to me March 27,

1900. A last of the type referred to consists of a fore part and a heelpart hinged together and separated above the hinge by a V-shaped notchin order to allow the heel part to swing on the hinge when the last isinserted in or removed from a shoe.

" The object of my invention is to provide a last-sawing machine bywhich a V-shaped block may be removed from an integral last to {form aV-shaped notch above the hinge and by which the heel part of the lastmay be separated from the fore part; and with this object in view myinvention consists in a last-sawing machine provided with a lastsupport,two saws arranged to saw a V-shaped block from a last, and a sawarranged to cooperate with said saws to separate the heel part from thefore part of the last, said lastsupport and saws being relativelymovable to bring the last and saws into engagement 3 5 and the planes inwhich said saws are located being parallel to the line of such movement.

Myinvention also consists in the devices and combinations of deviceshereinafter described and claimed, the advantages of which will beobvious to those skilled in the art from the following description.

A preferred form of my invention is illustrated in the accompanyingdrawings, in which 5 Figure 1 is a view in front elevation of alast-sawing machine embodying the same. Fig. 2 is a plan View of themachine shown in Fig. 1. Fig; 8 is a View in side elevation of the last,the means for supporting the same, and a portion of the saws,illustrating the action of the saws in removing the V- shaped blockfromthe last and in separating the heel part from the fore part of the last.Fig. l is a view in side elevation of a lastsupporting mandrel, to behereinafter described; and Fig. 5 is an end view thereof.

A machine embodying my invention is provided with three saws, two ofwhich are arranged at an angle to each other to saw a V- shaped blockfrom a last and the other of which is arranged at an angle to one orboth of said saws and extends outside of such angle, so as to completethe separation of the heel part from the fore part of the last, suchseparation being partially accomplished by the removal of the V-shapedblock. The planes in which the three saws are located all extend in thedirection of the relative movement imparted to the last and saws inbringing the last and saws into engagement, and this arrangement of thesaws may be conveniently defined bysaying that they are located inplanes which are parallel to a given right line. In the machineillustrated in the drawings these saws are indicated ml, 2, and 3and arearranged in intersecting planes, so that the planes of the cuts made inthe last by the saws intersect at the axis of the hinge of the completedlast. Suitable means are provided for driving the saws, as will behereinafter described, and also means for adjusting the saws to allowdifierent-sized saws to be used in the machine or to maintain the properrelative position of the saws as they are worn away in sharpening.

In order that the last may be properly presented to the saws, a featureof my invention contemplates providing a suitable support for the lastand in providing means whereby a relative movement may be imparted tothe 0 last-support and saws to bring the last and saws into engagement.The type of last for the manufacture of which the machine illustrated inthe drawings is particularly designed is provided with a hole to receivethe 5 parts of the hinge, and this hole is conveniently bored in thelast before the heel part is separated from the fore part. Thelastsupport of the machine shown in the drawings comprises a mandrel 4,which enters the loo hole bored in the last for the hinge and atoesupport 5. The mandrel 4 is so located in the machine that its axisis in line with the line formed by the intersection of the planes inwhich the saws 1, 2, and 3 are located. The last is thus properlypositioned with relation to the saws by the mandrel. To insure theremoval of the V-shaped block and the separation of the heel part fromthe fore part of the last, the mandrel 4 is provided with grooves 6 and7, into which the teeth of the saws 1, 2, and 3 project, as is clearlyshown in Fig. 3. In the machine shown in the drawings the relativemovement of the last and saws to bring the last and saws into engagementis obtained by mounting the mandrel 4 upon a carriage movable toward andfrom the saws, as will be hereinafter described. The mandrel 4 is alsoadjustable to maintain the proper relation of the mandrel to the sawswhen the saws are adjusted.

Referring now to Figs. 1 and 2, it will be seen that the saws 1 and 2are secured by suitable clamping-bolts and washers to the inner ends ofshafts 8 and 9, arranged at an angle to each other. Each shaft issupported in bearings 10 and 11 on a'carriage 12, mounted to slide in aguideway formed in the vertical plate 13 of a frame 14 and held inadjusted position by means of a bolt 15 passing through a slot in thecarriage 12 and a hole in the plate 13. The above-described arrangementis such that the carriages 12 can be moved to adjust the shafts 8 and 9longitudinally and thereafter locked in adjusted position by means ofthe bolts 15. By so adjusting the shafts the saws can be set at thedesired distance apart and the proper relative position of the sawsmaintained when the saws become worn in sharpening. The shafts 8 and 9are provided at their outer ends with pulleys 16 and 17 and are drivenfrom the main driving-shaft 18, journaled in the rear portion of frame14,by means of belts 19 and 20, which pass over the pulleys 16 and 17and pulleys 21 and 22, secured to the driv ing-shaft 18.

' The saw 3 is secured by a suitable clamping-bolt and washer to theinner end of a horiz'ontal shaft 23, journaled in bearings carried by avertically-adjustable carriage 24, mounted in suitable guideways in thevertical plate 13. The carriage 24 is held in adjusted position by meansof a bolt 25 passing through a hole in the carriage and a slot in theplate 13. By the construction above described the saw 3 can be adjustedtransversely to its axis of rotation to bring the saw into properposition with relation to the saws 1 and 2. The shaft 23 is driven fromthe driving-shaft 18 by means of a belt 26, passing over a pulley 27 onshaft 23 and apulley'28'on shaft 18. The frame 14 is secured by anysuitable means to a bench, as shown in dotted lines in Fig. 1 or othersuitable support, and the shaft 18 is provided with suitable fast andloose pulleys 29 and 30.

From an inspection of Fig. 2 it will be seen that the saw 3 is locatedat the rear of saws with relation to the saws 1, 2, and 3.

1 and 2, by which arrangement the saws 1 and 2 pass completely throughthe last before the saw 3 has severed the heel part from the fore partof the last. By this arrangement the V-shaped block is removed from thelast, and thereafter the last is supported by the mandrel, as will behereinafter described, until the heel part is separated from the forepart by the saw 3. This arrangement also renders the machine easier ofoperation.

The mandrel 4 and toe-support 5 are secured to a carriage 31, mounted toreciprocate upon guide-rods 32, extending forward horizontally from thevertical plate 13 of frame 14, the rods being tied together at theirforward ends by means of a cross-piece 33. The mandrel 4 is secured bymeans of a setscrew 34 to the upper end of a standard 35, which isvertically adjustable in a socket in the carriage 31 and is held inadjusted position by means of a set-screw 36. By raising or lowering thestandard 35 the mandrel 4 can be adjusted to. bring it into properposition The toe-support 5 (see more particularly Fig. 2) consists of arod bent at right angles, the lower end of which is received in a socketsecured to lug 37 of carriage 31 by means of a screw 38, theconstruction being such that by loosening the screw 38 the socket can berotated about the screw as a pivot and locked in any desired position. AVertical adjustment of the rod 5 is provided for by means of a set-screw39, which holds the rod in the socket. By the adjustment above describedthe toe-support 5 can be adjusted to bring the last into proper positionto be acted upon by the saws.

The carriage 31 is normally held in retracted position, as shown in Fig.2, by means of weights 40, which are connected to the carriage 31 bymeans of cords 41, passing over pulleys 42, journaled on the verticalplate 13 of the frame, and pulleys 43, journaled at the ends ofcross-piece To bring the last in engagement with the saws, the carriage31 is moved toward the saws by means of a foottreadle 44, pivoted at tothe floor of the shop orotherstationarysupport. Thetreadle IIS isconnected by means of a link 46 to the short arm of a bell-crank lever47, pivoted at 48 to a standard 49, the long arm of the bell crank lever47 being connected by means of a link 50 to the carriage 31. v

The operation of the machine above described has been sufficientlyindicated in connection with the description of its construc= tion,andfurther description thereof is deemed unnecessary.

I-Iavin g thus indicated the nature and scope of my invention and havingexplained the construction and mode of operation of the preferredembodiment thereof,I claim as new, and desire to secure by LettersPatent 1. A last-sawing machine, having, in combination, a last-support,two saws arranged at an angle to each other to saw a V shaped block fromthe last and a saw arranged at an angle to one of said saws andextending out side of such angle to cooperate with said saws to separatethe heel part from the fore part of the last, said last-support and sawsbeing relatively movable to bring the last and saws into engagement, andthe planes in which said saws are located being parallel to the line ofsuch movement, substantially as described.

2. A last-sawing machine, having, in combination, a last-support, twosaws arranged at an angle to each other to saw a V-shaped block from alast, and a saw located at the rear of said saws arranged at an angle toone of said saws and extending outside of such angle to codperatewithsaid saws to separate the heel part from the fore part of the last,said last-support and saws being relatively movable to bring the lastand saws into engagement and the planes in which said saws are locatedbeing parallel to the line of such movement, substantially as described.

8. A last-sawing machine, having, in combination, two saws arranged atan angle to each other to saw a V-shaped block from a last, a sawarranged at an angle to one of said saws and extending outside of suchangle to cooperate with said saws to separate the heel part from thefore part of the last and alastsupporting mandrel provided with groovesto receive the saws, said saws and mandrel being relatively movable tobring the last and saws into engagement,and the planes in which saidsaws are located being parallel to the line of such movement,substantially as described.

4. A last-sawing machine, having, in combination, two saws arranged atan angle to saw a V-shaped block from a last, a saw arranged at an angleto one of said saws and extending outside of such angle to cooperatewith said saws to separate the heel part from the fore part of the last,a last-supporting mandrel provided with grooves to receive the saws,said saws and mandrel being relatively movable to bring the last andsaws into engagement, and the planes in which said saws are locatedbeing parallel to'the line of such movement, and adjusting means forbringing the saws and mandrel into proper relative position,substantially as described.

5. A last-sawing machine, having, in combination, two saws arranged atan angle to each other to saw a V-shaped block from a last, means foradjusting said saws longitu dinally of their axes, a saw arranged at anangle to one of said saws and extending out side of such angle tocodperate with said saws to separate the heel part from the fore part ofthe last, means for adjusting said saw transversely to its axis, alast-supporting mandrel provided with grooves to receive the saws, saidsaws and mandrel beingrelatively movable to bring the last i and sawsinto engagement, and the planes inwhich said saws are located beingparallel to the line of such movement, and means for adjusting said mandrel transversely to its axis, substantially as described.

6. A last-sawing machine, having, in com bination, a last-support, twosaws arranged at an angle to each other and a saw arranged

